National Geographic presented some clever innovations which save lives and the planet. Here's one:
First Prize: Sustainable Technology
Air Conditioner Fights Global Warming
Though it may not seem like the most glamorously green invention, this redesign of the common air conditioner could save a quadrillion BTUs a year in the United States alone.
Replacing the conditioner's piston compressor and expansion valve with scroll compressors--more commonly used in automobile superchargers--and updating the power supply yielded power savings of 30 percent, wrote Create the Future contest winner Lindsay Meek of Australia.
The U.S. Department of Energy reports that two-thirds of U.S. homes have air conditioners, producing a hundred million tons of carbon dioxide annually and consuming 5 percent of the energy produced in the United States -- which costs consumers more than $11 billion.
Check out the rest.